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Tag: Temperature

Projected winter temperature changes in the Arctic
The changes in cold-season mean temperatures over Arctic land regions are broken into three latitudinal bands for each region, as shown on the small map (which has an outer rim of 50° N). Error bars represent standard de...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic temperature anomaly patterns
Natural climate variability is organized into spatial patterns of high and low pressure regions, represented by the Arctic Oscillation (also called the Northern Annular Mode) and North Pacific patterns in the Northern...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic temperatures in the 20th century, modeled and observed
Observed Arctic winter land temperatures and IPCC model recreations for the 20th century. Note that although these model runs are able to capture the range of Arctic warm and cold periods, the timing of the peaks varies,...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Increases in annual temperatures for a recent five-year period, relative to 1951-1980
Warming is widespread, generally greater over land than over oceans, and the largest gains in temperatures for the planet are over the North American Arctic, north central Siberia, and on the Antarctic Peninsula. These r...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Mountain permafrost patterns and temperature gradients
Steep terrain and strong variability in surface temperatures are typical of mountain permafrost. The cross section in the foreground shows the complex distribution of subsurface temperatures characteristic of mountains, ...
01 Jun 2007 - by Stephan Gruber, University of Zürich. Hugo Ahlenius, UNEP/GRID-Arednal
Projected changes in permafrost (Northern Hemisphere)
Modelled permafrost temperatures (mean annual temperature at the permafrost surface) for the Northern Hemisphere (Arctic), derived by applying climate conditions to a spatially distributed permafrost model. (a) Present-d...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trends in spring temperatures and ice break-up dates in Canada
In Canada, recent evidence indicates a shortening of the freshwater-ice season over much of the country with the reduction being mainly attributable to earlier break ups. These trends match those in surface air temperatu...
01 Oct 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trends in permafrost temperatures during the last 23 to 28 years in northern Alaska
There has been a general increase in permafrost temperatures during the last several decades in Alaska, northwest Canada, Siberia, and northern Europe. Permafrost temperature records have been obtained uninterrupted for ...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Ozone hole size 1980–2006
The extent of ozone depletion for any given period depends on complex interaction between chemical and climatic factors such as temperature and wind. The unusually high levels of depletion in 1988, 1993 and 2002 were due...
01 Oct 2007 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Arctic ozone depletion and stratospheric temperature
Changes in ozone amounts closely follow temperature, with colder temperatures resulting in more polar stratospheric clouds that intensify ozone destruction. The results are compared from 1979 to 2006.
29 Nov 2007 - by Emmanuelle Bournay, UNEP/GRID-Arendal
Projected impact of climate change
Future climate change and projected impacts: Increased growth and yield rates due to higher levels of carbon dioxide and temperatures could result in longer growing seasons. For example, in mid to high latitude regions, ...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
Climate zones of the Caucasus ecoregion
The Caucasus ecoregion covers an area of 580,000 km2, and includes six countries. The Greater Caucasus Mountain Range with its lofty peaks forms a formidable barrier between the northern and southern parts of the ecoregi...
29 Jan 2008 - by WWF-Caucasus, design Manana Kurtubadze
Historical trends in carbon dioxide concentrations and temperature
The more recent history, from the middle ages and up until now, show increasing temperatures, rising as the world emerged from the Little Ice Age (LIA), around 1850. With the industrial era, human activities have at the ...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Cold places on the Southern Continent
Antarctica is the coldest, driest and windiest continent on Earth. This graph shows the annual temperatures and seasonal variation at three locations in Antarctica - the research bases Bernardo O'Higgins (Chile - on the ...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Increases in annual temperatures for a recent five-year period, relative to 1951-1980
Warming is widespread, generally greater over land than over oceans, and the largest gains in temperatures for the planet are over the North American Arctic, north central Siberia, and on the Antarctic Peninsula. These r...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected temperature increases in the Arctic due to climate change, 2090 (NCAR-CCM3, SRES A2 experiment)
Climate change, due to increased concentrations of greenhouse gases in the atmosphere, has lead to increased temperatures and large scale changes in the Arctic. The Arctic sea ice is decreasing, permafrost thawing and th...
31 Jul 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected impacts of climate change
Global climate change may impact food production across a range of pathways (Figure 17): 1) By changing overall growing conditions (general rainfall distribution, temperature regime and carbon); 2) By inducing more ex...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Possible individual ranges of yield and cropland area losses by 2050
Figure 24: Possible individual ranges of yield and cropland area losses by 2050 with climate change (A2 scenario), non-food crops incl. biofuels (six OECD scenarios), land degradation (on yield and area, respectively, s...
02 Feb 2009 - by Hugo Ahlenius, UNEP/GRID-Arendal
Simulated Future Temperature Trends
Weather patterns are altered.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Annual Temperatures Increases for 2001-2005 Relative to 1951-1980
Average surface temperature anomaly (oC)
27 Oct 2009 - by Laura Margueritte
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